HARRISBURG -- The previous Pennsylvania State University administration was not forthcoming to subpoenas seeking e-mail evidence in the Jerry Sandusky case and that issue is "probably the subject of an investigation in the Attorney General's Office," Gov. Tom Corbett said Thursday.

Corbett, the former attorney general who launched the investigation of the nation's most notorious pedophile, told reporters, "I think you need to say prior administration, prior people who were in control. Now if I limit it to that, I am very disappointed in the lack of forthcoming evidence to the subpoena that was given to them by the attorney general's office."

Asked if he thought administrators obstructed justice, Corbett said, "I have my own opinion and I am not going to share it with you."

The agency's investigators "are certainly checking into it to see why e-mails were not turned in earlier," said Bruce Antkowiak, a former federal prosecutor and law professor at St. Vincent's University. "That doesn't mean there was obstruction of justice. Obstruction is not something you can commit negligently. It is a crime of specific intent."

The governor was responding to reporters' questions about why former FBI Director Louis Freeh's report on the scandal last week had e-mails that were not provided.

The 1998 and 2001 e-mails were "the most important evidence in this investigation," Freeh said, and led to conclusions that former Penn State President Graham Spanier and former football coach Joe Paterno tried to cover up Sandusky's acts.

The university's trustees hired Freeh's law firm in the aftermath of Sandusky's arrest on child molestation charges.

"Let's take a look a the facts," Corbett emphasized. "There was a change in control" of the Penn State administration.